fminsearch returns Not enough input arguments.

Hi I have defined a function objfun as follows.

    % function z = objfun(x)

      z=x(1)^2+x(2)^2;

    end
  Then I tried to find its minimum (I know it is (0,0) ... I just want to do some tricks on top of this function) by using the following 

   % x = fminsearch(objfun,[2,2])

and got the following error

   Not enough input arguments.

    Error in objfun (line 3)
      z=x(1)^2+x(2)^2;

   Error in try1 (line 3)
    x = fminsearch(objfun,[2,2])

Could anyone help me with this please? Thank you!

Answer 1

[Walter Roberson]

    x = fminsearch(@objfun,[2,2])

[Minghao Luo]

I have met this annoying problem as well. I am very grateful your answer helped me solve it.

BTW I found you almost answered every question on this forum about fminsearch 'Not enough input arguments'. What a nice guy you are